I'm in complete shock!

If I get this right, you are talking about the episode "Sacrifice II". Indeed, Gabrielle and Hope tumbled into a deep endless-looking lava pit, and Callisto got stabbed in the stomach by Xena with a hind's blood knife. In fact, Gabrielle didn't have any options, because Ares had threatened her with Xena's death to get her to protect Hope. Therefore Gabrielle had no choice but to save Xena. But fear not! Everyone's alive! Xena would be searching for Gabrielle in the Amazon Land of the Dead. And they would find each other in the episode "A Family Affair", in which they had to deal with the evil Hope again (for the last time, though). Just look at the picture - this is the Xena-Gabrielle reunion scene! Callisto would later return in the episode entitled "The Ides Of March". By the way, if you've just watched "Sacrifice II", then you still have 66 more episodes to go! Congrats, you are at the halfway point of the show!

nuh-nuh
don't say that!
Xena and hope are friends not lesbians